Obama is pushing hard for what he calls "sensible reforms" when it comes to gun control, but he is also not surprised in the spike of gun purchases, telling Brunner that anytime "sensible" gun legislation is proposed, a spike in sales is often a byproduct.

But even with new laws on the books, he admits it won't solve the problem entirely.

"Make sure we've got a strong universal background check and make sure that weapons of war are essentially off the streets where police officers are being outgunned. The majority of the American people, including the majority of gun owners agree with many of these proposals," he said.

"They deserve a vote. So we're going to keep on pushing and hopefully we can avert some of the violence out there."

One area the President is less concerned about is what is will happen in the Massachusetts special Senate election.

With John Kerry now sworn in as Secretary of State, will a Democrat or a Republican fill his old senate seat?

Obama was quick to answer.

"I expect we should be able to elect another great Democratic senator in the tradition of Senators Kerry, Senator Kennedy and Senator Warren. I am confident we can pull that out."

No doubt, he will work to ensure that happens, as well as what he calls his first priority: keeping Americans safe.

That is what he hopes will be part of his legacy.

"If at the end of my presidency I can look back and say that we're growing our middle class again, that if you work hard, you get ahead in this country, that people feel a little more security, when it comes to things like health care, then I think I will have done my job."

But he also told Brunner, that does not negate his job of being a dad.

Brunner asked him which was harder: being a father of a teenage daughter or running the United States?

"Well, I don't know about most fathers of teenage daughters, but mine are terrific, and they haven't given me any problems so far. Except for the fact that they are so busy now on weekends, I don't get to see them."

Lawyers for Boston Marathon bomber Dzkokhar Tsarnaev rested their case in his federal death penalty trial Tuesday after presenting a brief case aimed at showing his late older brother was the mastermind of the 2013 terror attack.